单选题
The particular bird they were watching______.
A、
danced with the two hen birds
B、
fell off a branch
C、
was afraid of the two hen birds
D、
cleaned himself in frequency
【正确答案】
D
【答案解析】
[解析] 第一段中对于该鸟的动作描写很细腻，清楚地说明了"The particular bird they were watching cleaned himself in frequency．"
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